prindle and john wellfare



@einen :tetra datent @frn E. T. PRINDLE AND. JOHN WELLFARE, 0F AURORA, ILLINOIS. Letters Patent No. 72,900, dated December 31, 1867.

IMPROVEMENT 1N Laurens.

TO ALL WHOM IT MAY CONCERN:

Be it known thatwe, E. T. PRINDLE and JoHN WELLFARE,-of Aurora, in the county of Kane, and in the State of Illinois, have invented certain new and useful Improvements in Lanterns; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon.

In the annexed drawings, making part of this speciCatiOn, A represents thc case of the lantern, which is constructed of metal, and made open at its bottom. This case is provided with an opening, d, in its upper end, which said opening is covered by two curved plates, a and c, one raised above the other, and thelower one raised a little above the opening d. The front side of the case .A is provided with a bulls-eye glass, B, and back of this bulls-cye, and secured to a metallic slide, D, on the inside and hack of the case, is ani-annularlooking glass, C. The slide D is secured in position by means of a pin, e, or its cquivalentfn'hich passes through a loop, said loop Apassing through a slot in the slide;

K represents a lamp, constructed in any o` the known and usual ways, which is slipped into the case A from its bottom. This lamp is provided with two metallic springs, II H, which are fastened to its ends, and which-are bent under the bottom of the lamp. These springs-have shoulders, which catch upon ledges or ianges on the inside of the case for the purpose of holding the lamp in position' in thecflsc1A The lantern case A is provided, on its inside and at its lower end, with la lining, I, said lining setting out a little from the case, so as to leave a chamber or air-passage between it andthe case. The oase Ais provided, near its bottom also, with a series of pcrforations or holes, which admit air to the chamber above spoken oi'. Air isfurnished to the lamp K through the perforations The lining I breaks the draught of air or wind, so that a steady current of air is supplied to the lamp inthe direction of the iiamc.

Having thus fully described our invention, what we claim as new, and desired-to secure by Letters Patent, is

The arrangement of the case A, the bulls-eye B, glass C, and lamp K, the case being provided with a lining, I, and with perforations z', whereby a steady current of air is supplied to and lin the, direction of they lamp flame, substantially as and fonthepurpose speciiicd. v

In testimony that we claim the foregoing, we have hereunto set our hands this 12th day of February, 1867.

' E. T. PRINDLE,

JNO. WELLFARE.

Witnesses:

AUGUSTUS BAUER, A. A. JOHNSON. 

